Use `EXTR_SKIP` to prevent overwriting:
extract($_GET, EXTR_SKIP);Source: External Variable Modification/README.md in PayloadsAllTheThings. From PayloadsAllTheThings by Swissky and contributors. MIT License, Copyright (c) 2019 Swissky.
External Variable Modification · passage 6 of 6
Remediations
1 code block · External Variable Modification/README.md
For testing systems you own or are authorised to test, and for defending them. Nothing here is run by this page.
Open this passage on GitHubEvery one of the 6 is a mark on the map. Named now: 1 to 6, reading order first.
- External Variable Modification
- Methodology
- Overwriting Critical Variables
- Poisoning File Inclusion
- Global Variable Injection
- Remediations
Zoom in on the map and the dots under the middle of it are named where they are.
Data as of 2026-11-14. CVE List through 2026-11-14 · EPSS of 2026-11-13 · CISA KEV checked 2026-11-14. Source: PayloadsAllTheThings by Swissky and contributors, MIT License. For authorised testing only.